CN202001104U

CN202001104U - Miniature generator

Info

Publication number: CN202001104U
Application number: CN2011200830038U
Authority: CN
Inventors: 田蜜; 何林
Original assignee: CHONGQING LIHUA TECHNOLOGY Co Ltd
Current assignee: CHONGQING LIHUA TECHNOLOGY Co Ltd
Priority date: 2011-03-25
Filing date: 2011-03-25
Publication date: 2011-10-05
Anticipated expiration: 2021-03-25

Abstract

The utility model discloses a miniature generator, comprising a generator, an engine, a silencer, a base plate and a chassis which are sequentially arranged in a shell. A cooling fan is arranged at each of the two sides of a generator crankcase, is coaxial with the output shaft of the generator, and is driven by the generator to rotate; the generator is arranged in an inclined cylinder type; and the silencer is arranged in a containing space between the base plate and the lower part of a cylinder end. For the miniature generator, due to the arrangement position of the silencer, the space utilization rate can be improved substantially, so that the volume of the miniature generator can be more miniaturized, and the miniature generator has a cuboid shape which is convenient for carrying; and as a cooling air flue is arranged newly, the cooling requirement of the generator can be effectively met, and simultaneously, the miniature generator can be cuboid; and by the two methods, the mobility and the portability can be improved, and the excellent cooling effect can be realized.

Description

Small generator

Technical field

The utility model relates to the small generator field, and wherein generator is contained in the housing with the motor that drives generator, and this motor is supported by the chassis via assembling set.

Background technique

Known small generator of new generation, it comprises generator, carry out the electronic inverter of power conversion, drive the motor of generator, the cooling fan that links to each other with the engine-driving axle, the air channel of guiding air flow, and motor and cooling fan are contained in the housing, support the chassis of described housing, air inlet and cooling air relief opening are arranged on the housing, when work, produce electric energy by engine driven generators rotation synchronously, by electronic inverter the electric energy of this output is handled again, and make frequency, waveform, the small generator that performances such as voltage are all very high, because small generator of new generation adopts intermediate frequency generator by electronic inverter conversion output electric energy, than conventional electric generators, its conversion efficiency is higher, weight is lighter, in addition, engine speed changes constantly along with the variation of load, compare with traditional small-sized constant speed engine, the motor conversion efficiency improves greatly when less load, again because of small generator usually is being in little load condition under the use condition, thereby reach purpose of energy saving, because of above-mentioned advantage, in the small generator field, a new generation's small generator just progressively replaces the conventional small generator, and portable small-sized generator is little because of its volume, in light weight, noise is little, mobility is strong, outward appearance fashion, and become small generator main trend of new generation.

In existing technology, traditional small generator, the operation of cooling fan makes outside air suck in the housing by air inlet, thereby can be with the outside air introduced as in the cooling air guiding motor air channel, with cooled engine, then flow through the baffler that is arranged in the cylinder head side, with the cooling baffler, flow through the cooling air relief opening at last, be discharged to beyond the housing, because baffler is arranged in the engine cylinder body side surface, in order to reduce the baffler temperature, make engine operation normal, cooling duct has had more a baffler width in the side, is the square body of length and width unanimity thereby make small generator, because wider width is limited greatly in the mobility and the portability of handling process medium and small generator.In this external conventional electric generators, cooling air is under the effect of centrifugal cutter, by cylinder head one effluent to opposite side, cooling cylinder head and the casing that is connected with cylinder head, flow through baffler then in the cylinder head side, behind the cooling baffler, discharge, since cooling air when flowing through motor and the surface of contact of motor be only limited to cylinder head, cylinder body and baffler, other face of engine housing, substantially there is not cooled gas to flow through, cause motor temperature when rated load is worked higher, influence the life-span of motor and other parts, have to reduce rated load sometimes and reduce temperature.

Summary of the invention

In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of improved small generator, can make the layout of each parts compacter more reasonable, improving mobility and simultaneously portable, has outstanding cooling effect.

To achieve these goals, the technical solution adopted in the utility model is such: promptly a kind of small generator, this small generator comprises: generator, the electronic inverter that is used for power conversion, be used to drive the motor of described generator, the cooling duct that is used for cooled engine, the fuel oil blender that links to each other with engine air inlet tube, the empty filter that is used for the filtered air dust, the igniter that is used to light a fire with the silencing apparatus that the engine exhaust emission pipe links to each other, supports the base plate of described motor, hold above-mentioned generator, motor, baffler, the housing of base plate supports described base plate, the chassis of housing; It is characterized in that: described motor is that the diagonal-cylinder type that cylinder centerline and horizontal line are angle is settled, and described baffler is arranged between engine cylinder head below and the base plate in the holding space, makes small generator be portable cuboid profile.

Said structure further comprises:

First cooling structure: by first cooling fan that is installed in the engine output shaft left end suck from the cool air of intake grill the wind scooper of first cooling fan, left side covering, under the guiding in the air channel that constitutes of covering and cylinder head covering, form the two-way cooling duct, the one tunnel directly guides to the baffler left side cools off baffler; Cool off the end face of generator unit stator, generator casing, cylinder head and baffler successively on another road;

Second cooling structure: will enter the covering cool air by second cooling fan that is installed in the engine output shaft right-hand member and suck, under the guiding in the air channel that its wind scooper, cover plate and right side covering constitute, cool off on the right side of subtend baffler; Each road cooling air all compiles the back and discharges housing by the elasticity air guide sleeve at the baffler place.

In the said structure, because adopting two cooling fans works simultaneously, under the situation of equal rotating speed, fan is improved the ability to function of air, the corresponding raising of cooling air flow velocity, covering on the limit has simultaneously increased radiating fin and cooling air has been flow through from the motor lower surface, increase the heat diffusion area that flows through motor, so the engine cooling effect is improved, because the lifting of cooling effect, can make identical generator output more high-power, thereby the specific power of small generator is promoted.

By above two measures, in mobility that improves small generator and portability, the specific power of small generator is promoted.

Description of drawings

Fig. 1: whole perspective view;

Fig. 2: the flow direction of cooling air in housing;

Fig. 3: cooling air flows at engine interior;

Fig. 4: generator explosive view;

Fig. 5: small generator sectional view;

Fig. 6: the fan structure schematic representation, cooling air covers the flow direction on the limit;

Fig. 7: after removing the air channel cover plate, cooling air flows on motor;

Fig. 8: complete motor and air channel outward appearance;

Fig. 9: engine explosions schematic representation;

Figure 10: baffler goes out the position complementary views in motor;

Among the figure: 1-frame set, 1-1-left side housing, 1-2-starts handle, 1-3-handle, 1-4-fuel tank cap, 1-5-right side housing 1-6-panel, 1-7-combination oil switch, 2-chassis component, 2-1,2-2,2-4,2-5-outer damping pad, 2-4-chassis, 3-bottom deck assembly, 3-1-base plate, 3-2,3-3,3-4,3-5-interior damping pad, 4-the first cooling package, dish is drawn in 4-1-startup, 4-2-wind scooper, 4-3-first cooling fan, 5-generator assembly, 5-1-rotor, 5-2-stator, 6-the second cooling package, 6-1-limit lid, 6-2-dividing plate, 6-3-second cooling fan, 6-4-cover plate, 7-ducting assembly, 7-1-right side covering, 7-2-last covering, 7-3-cylinder head covering, 7-4-left side covering, 7-5-elasticity air guide sleeve, 8-air filter, 9-fuel mixer, 10-ignition mechanism, 11-baffler, 12-engine pack, 12-1-cylinder cap, 12-2-cylinder head, 12-3-casing, 12-4-bent axle, 13-electronic inverter, 15-the first cooling structure cooling air flows to, and 16-the second cooling structure cooling air flows to.

Embodiment

Mode of execution of the present utility model is below described, but should understand the utility model and be not limited to described mode of execution, can carry out various modifications to the utility model under the situation that does not deviate from basic principle, therefore, scope of the present utility model only is indicated in the appended claims.

Referring to accompanying drawing, small generator comprises: generator 5, the electronic inverter 13 that is used for power conversion, be used to drive the motor 12 of described generator 5, the

cooling duct

4,6,7 that is used for cooled engine 12, the fuel oil blender 9 that links to each other with engine air inlet tube, the empty filter 8 that is used for the filtered air dust, the igniter 10 that is used to light a fire, the silencing apparatus 11 that links to each other with the engine exhaust emission pipe, support the base plate 3 of described motor 12, hold the housing 1 of above-mentioned generator 5, motor 12, baffler 11, base plate 3, support the chassis 2 of described base plate 3, housing 1; It is characterized in that:

Described motor is that the diagonal-cylinder type that cylinder centerline 14-1 and horizontal line 14-2 are angle is settled, and described baffler 11 is below cylinder head 12-2 and between the base plate 3 in the holding space;

The fuel tank 1-8 that is used for fuel reservoir, the interior upper wall and the motor 12 that hang on housing 1 are separated with certain clearance, and the vibration and the fuel tank that produce when making motor 12 work are isolated.

Motor 12 is seated on the base plate 3, is connected by screw, and base plate 3 is connected by 4 inner rubber damping pad 3-2,3-3,3-4,3-5 with chassis 2, and the vibration that motor is delivered to chassis 2 can effectively be suppressed, and the Oscillation Amplitude on chassis reduces greatly.

2 bottoms, chassis have 4 outer damping pad 2-1,2-2,2-4,2-5, damping pad is made by rubber, contact with ground by damping pad, small generator roughly can be kept level, and can further absorb the vibration that chassis 2 produces, thereby make mini engine can not produce mobile at work because of vibration.

The noise that engine luggine produces, with the motor is center radiation towards periphery, because housing 1 is fixed on the chassis 2 and with motor 12 and has certain interval, when noise arrives housing 1, a part is passed housing 1 and is continued radiation to space outerpace, another part will be inhaled and the reflected back motor by housing 1, because the absorption of housing and reflection make the sound wave that gives off small generator obtain by a relatively large margin decay, thereby reduce noise pollution.

As shown in figure 10, the motor that diagonal-cylinder type is settled, its cylinder centerline 14-1 and horizontal line 14-2 are the angle of θ degree, the cylinder arrangement at angle of inclination, can effectively reduce motor center of gravity G and reduce the motor height H, the G point just in time is positioned in the middle of the mini engine simultaneously, can effectively improve the stationarity in complete machine work or the handling process, cylinder centerline and horizontal line are θ degree angle, form a free space, thereby baffler 11 can be arranged in the free space, baffler is arranged in the free space, can effectively reduce, the small generator size, and make the cuboid that is shaped as of micro-machine.

Air inlet/supply of fuel mechanism to motor fuel supplying (being air-fuel mixture) comprises:

The fuel tank 1-8 that is used for fuel reservoir, be arranged at the air filter 8 on cylinder cap 12-1 top, be arranged at the fuel mixer 9 of cylinder head 12-2 sidepiece, this fuel mixer 9 is used for mixing from fuel tank 1-8 supplied fuel with from air filter 8 air supplied, is supplied to motor 12 thereby synthetic fuel is mixed gas.

Engine-driving bent axle 12-4 makes its rotation, bent axle 12-4 rotation is passed to the generator amature 5-1 and the one the second cooling fan fan 4-3 and the 6-3, generator amature 5-1 rotates around stator 5-2 periphery, make stator coil produce electric energy, the rotation of the one the second cooling fan fans drives the rotation of fan ambient air, make cooling air produce the pressure reduction at the outer high interior end because of centrifugal force, produce negative pressure at the cooling fan middle part, make the air that enters in the housing 2 flow into negative pressuren zone, cooling air in the zone of high pressure passes through

air channel

4,6 and 7, flow through motor 12 surfaces and take away heat energy, reduce motor 12 bulk temperatures, the baffler 11 of flowing through is again taken away heat energy, reduces baffler 11 temperature, and last cooling air is discharged housing 1 by the elasticity air guide sleeve.

Further, the cooling air of housing 1 will be entered, by centrifugal cutter 4-3 effect, wind scooper 4-2, the left side covering 7-4 of first cooling fan, under the guiding in the air channel that constitutes of covering 7-2 and cylinder head covering 7-3, a curb 15-3 wherein) the arrow direction flows, with the left side of its guiding baffler 11, behind the cooling baffler,, cooling air is discharged housing 1 by elasticity air guide sleeve 7-5; Another curb 15-4 arrow direction flows, with its guiding engine cylinder-body 12-3-1, cylinder head 12-2, at cooling cylinder body 12-3-1, behind the cylinder head 12-2, along 15-5 arrow direction, join with 16-5, with entering the cooling air of housing 1, by air channel 7-2, base plate 3-1 guiding, along 16-1,16-2,16-3 arrow direction, the flow through table wall of casing 12-3 is behind the cooling casing, along the 16-4 arrow direction generator limit lid radiating fin 6-1-1 that flows through, behind the lid 6-1 of cooling limit, flow to centrifugal cutter 6-3, in the effect of centrifugal cutter 6-3, and at its wind scooper, under the guiding in the air channel that cover plate 6-4 and right side covering 7-1 constitute, flow along the 16-5 direction, after 15-5 joined, the right side of the baffler of flowing through was behind the cooling baffler, by elasticity air guide sleeve 7-5, cooling air is discharged housing 1.

The one cooling fan 4-3 and the second cooling fan 6-3 are installed on the engine output shaft 12-4, by the engine output shaft driven rotary.

Described cooling fan 6-3 concrete structure as shown in Figure 6, comprise a ring matrix 6-3-1 and evenly be arranged at the arc shaped blade 6-3-2 of matrix border, directly matrix 6-3-1 inner ring sleeve being fixed on when mounted makes it rotate with bent axle 12-4 on the bent axle 12-4, fan 6-3 rotation drives the rotation of fan ambient air, makes the pressure reduction of cooling air because of the end in high outside the centrifugal force generation.

Described elasticity air guide sleeve 7-5 as shown in Figure 2, has higher elasticity, the vibration and the housing 1 of motor 12 are isolated, elasticity air guide sleeve 7-5 isolates motor ducting outlet (hot-zone) with housing 1 internal negative pressure district (cold-zone) simultaneously, stop the high temperature cooling air behind flow through motor 12 and the baffler 11 to reflux, hot-zone and cold-zone are separated from each other.

Described electronic inverter 13, electric energy with generator unit stator 5-2 sends guides to the electronic inverter 13 that is fixed on the chassis 2 by lead, handles through electronic inverter 13, with the midfrequent AC electric energy, be transformed to all very stable electric energy of performance such as frequency, waveform, voltage, defeated by lead at last, because electronic inverter 13 can produce heat energy when work, influence proper functioning, when air enters housing 1, some gas will flow through electronic inverter 13, and its heat energy is taken away.

When the user starts small generator, 1-7 rotates to enable position with enable switch, left hand is held handle 1-3, the right hand firmly pulling starts handle 1-2, bent axle 12-4 is rotated because of pulling force, and bent axle 12-4 is passed to the piston (not shown) with rotating force, makes piston do back and forth movement, and the mixed gas of suction carrying fuel, when mixed gas is compressed to the summit, under the effect of igniter 10, light mixed gas, promote piston, make its acting, the merit of making is by bent axle 12-4 output, and a part of kinetic energy is stored by generator amature 5-1, when ensuing cycle period, generator amature 5-1 discharges kinetic energy, to promote crankshaft rotating, driven plunger, waste gas is discharged, and suck the mixed gas of carrying fuel, with the mixed gas compression, by igniter 10 mixed gas is lighted again, in constantly circulating, motor just constantly converts chemical energy to the kinetic energy of rotation.

Whole this layout, make small generator be the cuboid profile, have very high mobility and portability, the user can be by catching the handle 1-3 of cover top portion, mention small generator is unsettled, be carried to desired locations easily, because very high mobility and portability, increased attraction force, thereby improved the competitiveness of product in market the user.

Claims

1. small generator, this small generator comprises: generator (5), the electronic inverter (13) that is used for power conversion, be used to drive the motor (12) of described generator (5), the cooling duct (4) that is used for cooled engine (12), (6), (7), the fuel oil blender that links to each other with engine air inlet tube (9), the empty filter (8) that is used for the filtered air dust, the igniter that is used to light a fire (10), the silencing apparatus (11) that links to each other with the engine exhaust emission pipe, support the base plate (3) of described motor (12), hold above-mentioned generator (5), motor (12), baffler (11), the housing (1) of base plate (3) supports described base plate (3), the chassis (2) of housing (1); It is characterized in that: described motor is that cylinder centerline (14-1) is settled with the diagonal-cylinder type that horizontal line (14-2) is angle, described baffler (11) is arranged between engine cylinder head (12-2) below and the base plate (3) in the holding space, makes small generator be rectangular shape.

2. small generator according to claim 1; Its feature also comprises: first cooling structure: by first cooling fan (4-3) that is installed in the engine output shaft left end suck from the cool air of intake grill at wind scooper (4-2), the left side covering (7-4) of first cooling fan, go up under the guiding in the air channel that covering (7-2), cylinder head covering (7-3) and base plate constitute, form the two-way cooling duct, the one tunnel directly guides to baffler (11) left side cools off baffler; Cool off the end face of generator unit stator (5-2), generator casing (12-3), cylinder head (12-2) and baffler (11) successively on another road; Second cooling structure: will enter covering (7-2) cool air by second cooling fan (6-3) that is installed in the engine output shaft right-hand member and suck, under the guiding in the air channel that its wind scooper, cover plate (6-4) and right side covering (7-1) constitute, cool off on the right side of subtend baffler (11); Each road cooling air all compiles at the baffler place and discharges housing (1) by elasticity air guide sleeve (7-5).